TY - JOUR
T1 - Exchange interaction and magnetic phase transition in layered Fe/Au superlattices
AU - Wang, Jian Tao
AU - Zhou, Lei
AU - Wang, Ding Sheng
AU - Kawazoe, Yoshiyuki
N1 - Funding Information:
This work was partially supported by a Grant-in-Aid for Scientific Research No. 00101930, from the Japanese Ministry of Education, Science, Sports and Culture. They wish to express their sincere thanks to the Materials Information Science Group of the Institute for Materials Research, Tohoku University, for their continuous support of the HITAC S-3800/380 supercomputing facility. J.-T. Wang would like to thank the JSPS for financial support.
PY - 2001
Y1 - 2001
N2 - In order to study the finite-temperature properties of the layered Fe/Au superlattice, Monte Carlo (MC) simulations are carried out based on a Heisenberg model with the exchange parameters extracted from the ab initio total energies and a phenomenological anisotropy constant. It is argued, that the Curie temperature is rather insensitive to the anisotropy and is essentially determined by the ab initio exchange parameters. Due to the reduced coordination number of the magnetic atoms at interfaces, the Curie temperature obtained by this ab initio-MC scheme decreases as decreasing of Fe layer thickness is governed essentially by Weiss'law.
AB - In order to study the finite-temperature properties of the layered Fe/Au superlattice, Monte Carlo (MC) simulations are carried out based on a Heisenberg model with the exchange parameters extracted from the ab initio total energies and a phenomenological anisotropy constant. It is argued, that the Curie temperature is rather insensitive to the anisotropy and is essentially determined by the ab initio exchange parameters. Due to the reduced coordination number of the magnetic atoms at interfaces, the Curie temperature obtained by this ab initio-MC scheme decreases as decreasing of Fe layer thickness is governed essentially by Weiss'law.
KW - Curie temperature
KW - Exchange interaction
KW - Ferromagnetic multilayer
KW - Monte carlo simulation
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U2 - 10.1016/S0304-8853(00)01111-2
DO - 10.1016/S0304-8853(00)01111-2
M3 - Article
AN - SCOPUS:78049369309
VL - 226-230
SP - 633
EP - 634
JO - Journal of Magnetism and Magnetic Materials
JF - Journal of Magnetism and Magnetic Materials
SN - 0304-8853
IS - PART I
ER -